qt4 - Qt 4.6 Adding objects and sub-objects to QWebView window object (C++ & Javascript) -

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i working qt's qwebview, , have been finding lots of great uses adding webkit window object.

one thing nested objects... instance:

in javascript can...

var api = new object; api.os = new object; api.os.foo = function(){} api.window = new object(); api.window.bar = function(){}

obviously in cases done through more oo js-framework.

this results in tidy structure of:

>>>api -------------------------------------------------------    - api                object {os=object, more... }      - os               object {}            foo          function()      - win              object {}            bar          function() -------------------------------------------------------

right i'm able extend window object of qtc++ methods , signals need, have 'seem' have in root child of "window". forcing me write js wrapper object hierarchy want in dom.

>>>api -------------------------------------------------------    - api                object {os=function, more... }      - os_foo           function()      - win_bar          function() -------------------------------------------------------

this pretty simplified example... want objects parameters, etc...

does know of way pass child object object extends webframe's window object?

here's example code of how i'm adding object:

mainwindow.h

#ifndef mainwindow_h #define mainwindow_h  #include <qtgui/qmainwindow> #include <qwebframe> #include "mainwindow.h" #include "happyapi.h"  class qwebview; class qwebframe; qt_begin_namespace  class mainwindow : public qmainwindow {     q_object  public:     mainwindow(qwidget *parent = 0);  private slots:     void attachwindowobject();     void bluesbros();  private:     qwebview *view;     happyapi *api;     qwebframe *frame;  };  #endif // mainwindow_h

mainwindow.cpp

#include <qdebug> #include <qtgui> #include <qwebview> #include <qwebpage>  #include "mainwindow.h" #include "happyapi.h"  mainwindow::mainwindow(qwidget *parent)     : qmainwindow(parent) {     view = new qwebview(this);     view->load(qurl("file:///q:/example.htm"));      api = new happyapi(this);      qwebpage *page = view->page();     frame = page->mainframe();      attachwindowobject();      connect(frame,             signal(javascriptwindowobjectcleared()),         this, slot(attachwindowobject()));      connect(api,             signal(win_bar()),         this, slot(bluesbros()));      setcentralwidget(view); };  void mainwindow::attachwindowobject() {         frame->addtojavascriptwindowobject(qstring("api"), api); };  void mainwindow::bluesbros() {         qdebug() << "foo , bar getting band together!"; };

happyapi.h

#ifndef happyapi_h #define happyapi_h  #include <qobject>  class happyapi : public qobject {         q_object  public:         happyapi(qobject *parent);  public slots:         void os_foo();  signals:         void win_bar();  };  #endif // happyapi_h

happyapi.cpp

#include <qdebug>  #include "happyapi.h"  happyapi::happyapi(qobject *parent) :         qobject(parent) {  };  void happyapi::os_foo() {         qdebug() << "foo called, want's it's bar back"; };

example.htm

<!doctype html> <html lang="en"> <head> <meta charset="utf-8" /> <title>stackoverflow question</title> <script type='text/javascript'      src='http://getfirebug.com/releases/lite/1.2/firebug-lite-compressed.js'></script> </head>  <body> <button type="button" onclick="api.os_foo()">foo</button> <button type="button" onclick="api.win_bar()">bar</button> </body> </html>

i'm reasonably new c++ programming (coming web , python background).

hopefully example serve not other new users, interesting more experienced c++ programmer elaborate on.

thanks assistance can provided. :)

i had same issue, , found answer here: http://doc.qt.nokia.com/4.7/qtwebkit-bridge.html

accessing child qobjects

every named child of qobject (that is, qobject::objectname() not empty string) default available property of javascript wrapper object. example, if have qdialog child widget objectname property "okbutton", can access object in script code through expression

 mydialog.okbutton

since objectname q_property, can manipulate name in script code to, example, rename object:

 mydialog.okbutton  mydialog.okbutton.objectname = "cancelbutton";  // on, mydialog.cancelbutton references button

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